package com.sky.service.impl;

import com.github.pagehelper.Page;
import com.github.pagehelper.PageHelper;
import com.sky.annotation.AutoFill;
import com.sky.constant.MessageConstant;
import com.sky.constant.StatusConstant;
import com.sky.context.BaseContext;
import com.sky.dto.EmployeeDTO;
import com.sky.dto.EmployeeLoginDTO;
import com.sky.dto.EmployeePageQueryDTO;
import com.sky.entity.Employee;
import com.sky.enumeration.OperationType;
import com.sky.exception.AccountLockedException;
import com.sky.exception.AccountNotFoundException;
import com.sky.exception.PasswordErrorException;
import com.sky.mapper.EmployeeMapper;
import com.sky.result.PageResult;
import com.sky.service.EmployeeService;
import org.springframework.beans.BeanUtils;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;
import org.springframework.util.DigestUtils;

import javax.swing.plaf.IconUIResource;
import java.time.LocalDateTime;
import java.util.List;

@Service
public class EmployeeServiceImpl implements EmployeeService {

    @Autowired
    private EmployeeMapper employeeMapper;

    /**
     * 员工登录
     *
     * @param employeeLoginDTO
     * @return
     */
    public Employee login(EmployeeLoginDTO employeeLoginDTO) {
        String username = employeeLoginDTO.getUsername();
        String password = employeeLoginDTO.getPassword();

        //1、根据用户名查询数据库中的数据
        Employee employee = employeeMapper.getByUsername(username);

        //2、处理各种异常情况（用户名不存在、密码不对、账号被锁定）
        if (employee == null) {
            //账号不存在
            throw new AccountNotFoundException(MessageConstant.ACCOUNT_NOT_FOUND);
        }

        //密码比对
        //进行md5加密，然后再进行比对
        password = DigestUtils.md5DigestAsHex(password.getBytes());
        if (!password.equals(employee.getPassword())) {
            //密码错误
            throw new PasswordErrorException(MessageConstant.PASSWORD_ERROR);
        }

        if (employee.getStatus() == StatusConstant.DISABLE) {
            //账号被锁定
            throw new AccountLockedException(MessageConstant.ACCOUNT_LOCKED);
        }

        //3、返回实体对象
        return employee;
    }

    @Override
    public void save(EmployeeDTO employeeDTO) {
        Employee employee = new Employee();
        BeanUtils.copyProperties(employeeDTO,employee);
        String s = DigestUtils.md5DigestAsHex("123456".getBytes());
        employee.setPassword(s);
        employee.setStatus(StatusConstant.ENABLE);
//        employee.setCreateTime(LocalDateTime.now());
//        employee.setUpdateTime(LocalDateTime.now());
//        //employee.setCreateUser(1L);
//        //employee.setUpdateUser(1L);
//        //通过ThreadLocal获取当前登录用户的id
        Long currentId = BaseContext.getCurrentId();
        employee.setCreateUser(currentId);
        employee.setUpdateUser(currentId);
        employeeMapper.insert(employee);
    }

    @Override
    public PageResult pageQuery(EmployeePageQueryDTO employeePageQueryDTO) {
        //用pageHelper插件来实现分页
        //List 接口  --- ArrayList --- Page
        //逻辑是这样子的，首先设置一个pageHelper告诉其页码和显示数量放入page对象中
        //然后我们自己只需专注我们的查询就可以了
        //运行过程，首先是我们的写的sql放到这个线程的一个位置保存
        //然后pageHelper就通过反射机制动态查处我们的总记录数，放入page对象
        //然后page中的页码和显示数量拼接sql从总记录中找到需要的记录封装车成employee集合对象放到page中
        // 最后我们的执行mapper.pageQuery其实就是上面的过程，返回结果就是一个page对象
        PageHelper.startPage(employeePageQueryDTO.getPage(), employeePageQueryDTO.getPageSize());
        Page<Employee> page=employeeMapper.pageQuery(employeePageQueryDTO);
        long total = page.getTotal();
        List<Employee> result = page.getResult();
        return new PageResult(total,result);
    }

    @Override
    public void startOrStop(Integer status, Long id) {
        Employee updateEmp=new Employee();
        updateEmp.setStatus(status);
        updateEmp.setId(id);
        employeeMapper.update(updateEmp);
    }

    @Override
    public Employee getById(Long id) {
        Employee employee =  employeeMapper.getById(id);
        // employee 有密码 --密码不适合返回
        employee.setPassword("******");

        return employee;
    }

    @Override
    public void update(EmployeeDTO employeeDTO) {
        Employee employee = new Employee();
        BeanUtils.copyProperties(employeeDTO,employee);
//        //更新人
//        Long currentId = BaseContext.getCurrentId();
//        employee.setUpdateUser(currentId);
//        //更新时间
//        employee.setUpdateTime(LocalDateTime.now());
//        employeeMapper.update(employee);
    }

}
